Improved sawing-machine



UNITED STATES PATENT GEEICEO ISAAC W. BOIVERS, OF OVID CENTRE, MICHIGAN.

IMPROVE!) SAWING-MACHINE.

Specification forming part of Letters Patent No. 39,626, dated August 25, 1863..

a part of this specification, in which- Fignre l is a plan or top view of my invention; Fig. 2, a side sectional view of the saine, taken in the line a' m, Fig. l; Fig. 3, a transverse vertical section of the same, taken in the line y y, Fig. 2, Fig. 4, a vertical section of a portion of the sa-me, taken in the line z z, Fig. 2.

Similar letters of reference indicate corresp onding parts in the several figures.

This invention relates to a new and improved machine for sawing direct from the log` strips for the manufacture of hoe, fork, and broom handles, and other similar articles.

The invention consists in the employment or use of a vertical and a horizontal saw in connection with a feed-carriage in which the log is suspended, the carriage being arranged in a novel way, and the log suspended within it in such a manner tha/t it may be adjusted relatively with the saws, so that the latter may act properly on the log to effect the desired end.

To enable those skilled in the art to make and use my invention, I will proceed to describe it.

A represents aframc having a driving shaft, B, at one end of it. This shaft B has a iiywheel, a, at one end, and three pulleys, b c d, are keyed on said shaft, all of which are shown clearly in Fig. I.

In the frame A there is placed vertically a shaft, G, which has a circular saw, D, on its upper end, and E is a shaft which is placed horizontally on the frame A, and has a circular saw, F, on its inner end. The saw F, it will be seen, has a vertical position, and the saw I) a horizontal one, as shown clearly in Fig. 3. The pulleys b c on the shaft B drive the saw-shafts C E through the medium oftwo belts, c e.

O is a shaft which is placed horizontally and transversely on the frame A, and has two pulleys, ff, keyed upon it. This shaft G is rotated or driven alternately by belts g g', which g, passing around a pulley, h, on a shaft, H, in the lower part ot' the frame A, and the other belt, g', passing` around a pulley, f2?, on a shaft, I, which is connected to the shaft H by gearsj. J is a lever which is placed in the frame A, and secured therein bya fulcrum-pin, t. This lever has two rollers, l l, attached to it, one being directly in line with each belt g g.

K is a belt by which motion is communi-v cated to the shaft H from the drivingshaft B, said belt passing around the pulley d on sh aft B.

On the shaft G there are placed two pinions, m m., and in the upper part ofthe frame A, at each side, there are placedv a series of rollers, a, on which a horizontal frame, li, rests. The frame L has racks M M attached to its under surface-one at each sideand into these racks the pinions m m on the shaft G gear. The frameL has two upright frames, N N', attached to it. These frames are each composed of two uprights, a a', connected at their upper ends by a cross-bar, o. The frame N is permanently attached to the frame L, but the other frame, N', is allowed to slide on L, and is secured to L at any point within the scope of its Inovement or adjust-ment by means of clamps p.

In each frame N N there is placed a horizontal sliding bar, O, the ends of which are titted between guides g, at the inner sides of the uprights a a. These bars O have each two vertical bars, i' i', attached to them, said bars passing up through niortises in the cross-bars o, the latter serving as guides for the bars O.

To each bar r there is attached a rack, s, into which pinions t t on shafts I? gear, said shafts working in suitable bearings, u, on the frames N N', and having ratchets v at one end, into which holdingpawls to catch. (See Figs. l and 3.)

Each bar O has a longitudinal recess, a', made in its upper surface, and into these recesses the upper parts of angie-shaped slides Q tit. These slides have racks b attached to them, and into said racks pinions c gear,whieh pinions are on shafts df, the latter passing transversely through the bars O, and having each a circular plate, e, on them. These plates are perforated with holes j, into any one of which a pin, g, on arms it may be titted, the arms h being fitted loosely on the shaft d', one on each. Each slide Q has a cenpass around the pulleys ff, one of said belts, ter point or pin,fi,attaehcd to it, and the ends of these points or pins pass centrally into the ends of the log R to be sawed.

To each end of the frame L there is attached' by ajointorhinge,j, apendentpawl, S. These pawls are so arranged that they may swing outward from the fra me L, but not toward it.

The pawls are constructed of pieces of wood with metal strips k attached, and serrated at their lower edges, as clearly shown in Fig. l. On the top of the frame A there are placed longitudinally two bed-pieces, l Z', both of which are shown in Fig. l.

The operation is as follows: The log R is cut of the desired length, and suspended on the center points or pins, i. The log is then adjusted in a proper relative position with the saws D F by moving the slides Q Q through the medium ofthe arms h', pinions c', and racks b. The logis adjusted laterally by this means, and is adjusted vertically by the racks s s and pinions t t. When the log is adjusted properly in relation with the saws D F,a reciprocating motion is given the frame L by means of the racks M M. and pinions m m, the direction of the rotation of the pinions m m bein g changed by means of the lever J, the latter being' so adjusted as to cause its rollers l l to bear or press alternately against the belts g y. At each movement of the frame L a strip is sawed longitudinally from the rough log, the saw F making a vertical cut into the latter, and the saw D a horizontal cut, the log being turned at the termination ot' each movement of the frame L, in order to place it in a proper relative position with the saws for a succeeding cut. After the log has been vturned one revolution, and one entire round ot' sticks or strips cut from it, the log is lowered by turning the shafts P P to a depth corresponding to the vertical cut the saw F is required to make, and a succeeding row or circle of sticks is cut from the log. The saw cuts of both saws are shown by lines ax in Fig. 3. l

By this invention the desired work may be. rapidly done, and in a perfect manner. The

sawed strips are discharged from the'machine through the medium of the pawls S S, the sticks or strips as they are cut dropping on the bed-pieces Z l', and the pawls S catching them and discharging them from the machine at each movement ot the frame L, a stick or strip which vwas previously sawed being discharged while the saws are cutting the succeeding stick or strip from the log, the sticks or strips being discharged alternately from the two ends of the machine.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent. is-

1. The vertical and horizontal saws D F, when used in combination with a reciprocating frame, L, having upright frames N N attached to ir, in which a log, It, is suspended, andthe frame L operated through the medium of the racks M M, pinions m m, belts r/ g', and

lever J, all arranged as and for the purpose herein set forth. y

2. Suspending the log R between the upright frames N N by means of the center points or pins, t', attached to the slides Q Q, which are moved or adjusted through the mediumof the racks b', pinions c', arms h, and plates e', substantially as shown and described, to admit ofthe lateral adjustment ofthe log R.

3. Placing the slide's Q Q on vertically-adjustable bars 0in the frames N N', the bars O heilig raised and lowered by means of the racks s and pinions t, as described, when the parts above named are used in combination with the saws D F, and the frames N N are attached to a reciprocating frame, L, all arranged to opcrate as and for the purpose herein set forth.

4. The pawls S S, attached to the ends ofthe frame L, when used in connection with the saws D F and bedepieces ZZ, as and for the purpose herein specified. v

ISAAC W. BOWERS.y Witnesses:

- WM. SHEPARD,

J osEPH WILSON. 

